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 A262488 T(n,k)=Number of (n+3)X(k+3) 0..1 arrays with each row and column divisible by 13, read as a binary number with top and left being the most significant bits. 7
 2, 3, 3, 5, 5, 5, 10, 9, 9, 10, 20, 23, 17, 23, 20, 40, 63, 61, 61, 63, 40, 79, 171, 245, 389, 245, 171, 79, 158, 449, 877, 2699, 2699, 877, 449, 158, 316, 1251, 3025, 16108, 33742, 16108, 3025, 1251, 316, 631, 3753, 11357, 93941, 364259, 364259, 93941, 11357, 3753 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts ...2.....3......5......10.......20........40........79......158.....316 ...3.....5......9......23.......63.......171.......449.....1251....3753 ...5.....9.....17......61......245.......877......3025....11357...56785 ..10....23.....61.....389.....2699.....16108.....93941...601676.4905724 ..20....63....245....2699....33742....364259...3810228.45013100 ..40...171....877...16108...364259...6945738.128397052 ..79...449...3025...93941..3810228.128397052 .158..1251..11357..601676.45013100 .316..3753..56785.4905724 .631.10361.172369 LINKS R. H. Hardin, Table of n, a(n) for n = 1..82 FORMULA Empirical for column k: k=1: a(n) = 3*a(n-1) -2*a(n-2) -a(n-6) +3*a(n-7) -2*a(n-8) k=2: [order 47] EXAMPLE Some solutions for n=4 k=4 ..1..0..0..0..0..0..1....1..1..1..0..1..0..1....1..1..1..0..1..0..1 ..0..0..1..1..0..1..0....1..0..0..0..0..0..1....1..0..0..0..0..0..1 ..0..0..1..1..0..1..0....1..0..0..0..0..0..1....0..0..0..0..0..0..0 ..1..0..0..0..0..0..1....0..1..1..0..1..0..0....1..0..0..0..0..0..1 ..1..0..1..1..0..1..1....1..1..1..0..1..0..1....0..0..0..0..0..0..0 ..1..0..0..0..0..0..1....0..1..1..0..1..0..0....0..0..0..0..0..0..0 ..0..0..0..0..0..0..0....1..0..0..0..0..0..1....0..1..1..0..1..0..0 CROSSREFS Sequence in context: A262457 A286870 A262319 * A278530 A023816 A159237 Adjacent sequences:  A262485 A262486 A262487 * A262489 A262490 A262491 KEYWORD nonn,tabl AUTHOR R. H. Hardin, Sep 24 2015 STATUS approved

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